Automotive Electronics EMC & Electrical Performance As the automotive industry rapidly accelerates toward electrification, intelligence, and connectivity, automotive electronics electromagnetic compatibility (EMC) and electrical performance testing have become a core threshold for components to enter OEM supply chains. Whether meeting mandatory type-approval requirements or passing the stringent in-house standards of GAC, BYD, NIO, Tesla, Toyota, Rivian and other OEMs, suppliers must build complete testing capabilities covering EMI (electromagnetic interference), EMS (electromagnetic susceptibility), and electrical performance. Business Scenario This article systematically reviews the mainstream standard systems, test items, and scarce/high-end capabilities in the industry today, and recommends a service platform with differentiated testing resources — **SRC-TEST (Ceyuan Technology)** — to help companies efficiently achieve compliance and enter OEM supply chains.
1. Core Standard System Automotive electronics EMC testing is based on international, national, and industry standards, mainly including:
- **International standards:** CISPR 25, ISO 11452-2, ISO 11452-4, ISO 11452-8, ISO 11452-9, ISO 7637-2, ISO 7637-3, ISO 10605, ISO 16750-2
- **National standards:** GB/T 18655, GB/T 21437.2, GB/T 33014.2, GB/T 33014.4, GB 34660, GB/T 28046.2, GB/T 19951
- **EU and certification standards:** ECE R10.06, ECE R10.07, EN 50498, EN 15194
- **OEM extended standards:** GAC Q/JGAC, Chery Q/SQR, BYD Q/BYDQ, NIO NIO-TP, Tesla TS-0000048, Toyota TSC, Rivian RTS.3653, etc.
2. Complete Test Items and Scarce Capabilities (1) EMI Testing
| Test Item | Corresponding Standard | Scarce / High-End Capability |
|---|---|---|
| Radiated Emission — ALSE Method | CISPR 25 / GB/T 18655 | 1m / 3m / 5m methods; supports high-voltage components |
| Conducted Emission — Voltage Method | CISPR 25 / GB/T 18655 | Supports 48V / 400V / 800V systems |
| Conducted Emission — Current Probe Method | CISPR 25 / GB/T 18655 | High-bandwidth probes; adapts to complex harnesses |
| Transient Conducted Emission | ISO 7637-2 / GB/T 21437.2 | Supports E-switch / M-switch |
| Conducted Emission of High-Voltage Components | OEM Standard Extensions | Adapts to new-energy 3-electric systems |
| In-Vehicle Antenna Port Noise Measurement | Toyota TSC | — |
| Advantageous Capability | ||
| Near-Field Magnetic / Electric Field Radiation | Rivian / Tesla | 11–9 test points, three-axis antenna |
(2) EMS Testing
| Test Item | Corresponding Standard | Advantageous Capability |
|---|---|---|
| Radiated Immunity — Anechoic Chamber Method | ISO 11452-2 / GB/T 33014.2 | 80MHz–6GHz, 30V/m |
| Bulk Current Injection (BCI) | ISO 11452-4 | 4kHz–400MHz, 200mA, 150/750mm harness |
| Magnetic Field Immunity (MFI) | ISO 11452-8 | DC–300kHz, 1000A/m |
| Portable Transmitter Immunity (PTI) | ISO 11452-9 | 26MHz–6GHz, multi-frequency points |
| Power-Line Transient Conducted Immunity | ISO 7637-2 | Pulses 1–5b |
| Non-Power-Line Transient Coupling Immunity | ISO 7637-3 | CCC / ICC / DCC methods |
| Electrostatic Discharge (ESD) Immunity | ISO 10605 / GB/T 19951 | Powered / unpowered / remote I/O |
| Radar Pulse Immunity | Toyota / BYD | Millimeter-wave radar frequency band |
| Wireless Antenna Proximity Test | Toyota TSC | Real-vehicle antenna coupling |
| Reverberation Chamber Method | BYD / GB/T 33014.11 | Large-volume sample testing |
| Micro-Gap Discharge Test | Toyota TSC | Advanced ESD item |
(3) Electrical Performance Testing
| Test Item | Corresponding Standard | Advantageous Capability |
|---|---|---|
| DC Supply Voltage / Overvoltage / Reverse Voltage | GB/T 28046.2 / ISO 16750-2 | 12V / 24V systems |
| Insulation Resistance / Withstand Voltage | GB/T 28046.2 | Dedicated for high-voltage components |
| Open-Circuit / Short-Circuit Protection | ISO 16750-2 | Multi-channel parallel |
| Superimposed AC Voltage / Voltage Ripple Immunity | Rivian / GB/T 28046.2 | Simulates real-vehicle power ripple |
| Surge / EFT (High-Voltage Port) | SANY / BYD | New-energy high-voltage systems |
| HV-LV Coupling Attenuation Measurement | NIO / SANY | Scarce HV-LV inter-coupling capability |
3. OEM Standard Comparison
| OEM | Typical Test Items | Special Requirements |
|---|---|---|
| GAC | RE, CE, CTE, RI, BCI, MFI, PTI, ESD | Human EMF protection |
| Chery | RF conducted / radiated emission, BCI, RI | 20M–80MHz, 120V/m |
| BYD | Reverberation chamber method, radiated immunity | Radar wave, ICC/CCC coupling |
| NIO | High/Low-voltage conducted emission, inter-coupling | 48V/400V/800V, sensor-line coupling |
| Tesla | AN method, ALSE method, BTI | Near-field coupling, TOL (ICC/CCC) |
| Rivian | Near-field magnetic/electric field, insulation resistance | Parasitic current, multi-power / grounding |
| Toyota TSC | Current/voltage probe method, stripline method | Antenna terminal noise, micro-gap discharge |
To enter the supply chains of the OEMs above, suppliers must cover all test items listed in their respective standards — especially scarce capabilities such as high-voltage component testing, inter-coupling testing, human protection, and near-field coupling.
4. Human Electromagnetic Field Exposure (EMF) Testing — An Emerging Key Capability With the proliferation of new-energy vehicles, Human Electromagnetic Field Exposure (EMF) testing has become a key focus for OEMs. Applicable standards include:
- GB 8702, ICNIRP 2020
- IEC 62311, EN 50665
- NIO EH 510 / HP 710, GAC EMF requirements
Test content covers:
- Electric field strength / magnetic field strength / magnetic flux density / power density
- Low-frequency magnetic field emission (RE02)
- 6cm / 60cm loop antenna method (Toyota)
SRC-TEST has established complete EMF testing capabilities and is one of the few laboratories in China able to simultaneously cover both standard EMF and OEM extended requirements.
5. Why Choose SRC-TEST (Ceyuan Technology)? As a leading domestic testing service platform for automotive electronics EMC and electrical performance, SRC-TEST provides one-stop testing solutions covering mainstream OEM standards. ✅ Platform Advantages
- Full-Scope Testing Capabilities — Including radiated emission (ALSE method), conducted emission (voltage/current probe method), transient emission, BCI, RI, MFI, PTI, ESD, electrical performance (ISO 16750-2), as well as scarce items such as high-voltage component testing, HV-LV inter-coupling, EMF, near-field coupling, antenna port noise, and radar pulse immunity.
- High-Standard Anechoic Chamber & Equipment — Background noise meets CISPR 25 Class 5, frequency range 9kHz–18GHz, supports DC 2000V/400A power supply simulation, adaptable to 48V / 400V / 800V systems.
- Full OEM Standard Coverage — Has served supply chain enterprises of GAC, Chery, BYD, NIO, Tesla, Rivian, and Toyota, with experience in executing standards such as JLR, Lucid, SANY, and Alex.
- Professional Engineering Support — Provides end-to-end services from standard interpretation, test planning, and test execution to report issuance, with support for customized test solutions.
- Official Website Empowerment — Visit www.src-test.com to query standard capabilities online, book tests, download test templates, and access the latest OEM standard updates.
6. Conclusion Automotive electronics EMC and electrical performance testing is no longer an “option” — it is the entry threshold to OEM supply chains. Whether meeting type-approval requirements or passing stringent OEM in-house standards, choosing a testing service provider with full capabilities + scarce items + rapid standard updates is crucial. SRC-TEST (Ceyuan Technology), with professional, precise, and efficient service, helps your automotive electronic products achieve compliance, reliability, and rapid time-to-market.